Divisional Rankings

Divisional Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Illinois, Climate Division 3. West

Average Temperature Rankings, April 1975

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 1975
1-Month
48.2°F
(9.0°C)
51.3°F
(10.7°C)
-3.1°F
(-1.7°C)
19th Coolest
Coolest since:
2018
110th Warmest
Warmest since:
2010
Mar–Apr 1975
2-Month
41.0°F
(5.0°C)
45.2°F
(7.3°C)
-4.2°F
(-2.3°C)
9th Coolest
Coolest since:
1960
120th Warmest
Warmest since:
2012
Ties: 1984
Feb–Apr 1975
3-Month
36.0°F
(2.2°C)
39.5°F
(4.2°C)
-3.5°F
(-2.0°C)
15th Coolest
Coolest since:
1899
114th Warmest
Warmest since:
2012
Ties: 1923, 1982
Jan–Apr 1975
4-Month
33.9°F
(1.1°C)
35.6°F
(2.0°C)
-1.7°F
(-0.9°C)
33rd Coolest
Coolest since:
1912
96th Warmest
Warmest since:
2012
Ties: 1929
Dec 1974–Apr 1975
5-Month
33.1°F
(0.6°C)
34.2°F
(1.2°C)
-1.1°F
(-0.6°C)
36th Coolest
Coolest since:
1978
92nd Warmest
Warmest since:
2012
Ties: 1958, 2011
Nov 1974–Apr 1975
6-Month
34.3°F
(1.3°C)
35.2°F
(1.8°C)
-0.9°F
(-0.5°C)
37th Coolest
Coolest since:
1904, 1912, 1978
91st Warmest
Warmest since:
2012
Ties: 1944, 1980, 1994
Oct 1974–Apr 1975
7-Month
37.2°F
(2.9°C)
37.9°F
(3.3°C)
-0.7°F
(-0.4°C)
38th Coolest
Coolest since:
1912
90th Warmest
Warmest since:
2012
Sep 1974–Apr 1975
8-Month
40.1°F
(4.5°C)
41.5°F
(5.3°C)
-1.4°F
(-0.8°C)
25th Coolest
Coolest since:
1904, 1978
103rd Warmest
Warmest since:
2017
Ties: 1984, 1997
Aug 1974–Apr 1975
9-Month
43.5°F
(6.4°C)
45.0°F
(7.2°C)
-1.5°F
(-0.8°C)
18th Coolest
Coolest since:
1978
110th Warmest
Warmest since:
2017
Ties: 1962, 1996
Jul 1974–Apr 1975
10-Month
46.9°F
(8.3°C)
48.1°F
(8.9°C)
-1.2°F
(-0.6°C)
24th Coolest
Coolest since:
1904
104th Warmest
Warmest since:
2012
Ties: 1963, 1969
Jun 1974–Apr 1975
11-Month
48.7°F
(9.3°C)
50.3°F
(10.2°C)
-1.6°F
(-0.9°C)
15th Coolest
Coolest since:
1904
113th Warmest
Warmest since:
2017
Ties: 1962, 2015
May 1974–Apr 1975
12-Month
49.7°F
(9.8°C)
51.3°F
(10.7°C)
-1.6°F
(-0.9°C)
17th Coolest
Coolest since:
1918
111th Warmest
Warmest since:
2017
Ties: 1926
Nov 1973–Apr 1975
18-Month
45.3°F
(7.4°C)
45.9°F
(7.7°C)
-0.6°F
(-0.3°C)
36th Coolest
Coolest since:
1979
91st Warmest
Warmest since:
2017
Ties: 1926, 1927
May 1973–Apr 1975
24-Month
50.9°F
(10.5°C)
51.2°F
(10.7°C)
-0.3°F
(-0.2°C)
38th Coolest
Coolest since:
1905
89th Warmest
Warmest since:
2017
Ties: 1911, 1925, 1982, 1996
May 1972–Apr 1975
36-Month
51.0°F
(10.6°C)
51.2°F
(10.7°C)
-0.2°F
(-0.1°C)
45th Coolest
Coolest since:
1979
81st Warmest
Warmest since:
2018
Ties: 1908, 1929, 1986, 2011
May 1971–Apr 1975
48-Month
51.1°F
(10.6°C)
51.2°F
(10.7°C)
-0.1°F
(-0.1°C)
45th Coolest
Coolest since:
1980
80th Warmest
Warmest since:
1935
Ties: 1909, 1914, 1921, 1951, 1959, 1983, 1995
May 1970–Apr 1975
60-Month
51.1°F
(10.6°C)
51.2°F
(10.7°C)
-0.1°F
(-0.1°C)
48th Coolest
Coolest since:
1906, 1979
76th Warmest
Warmest since:
1935
Ties: 1911, 1914, 1947, 1974, 1984

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